[SDL] About SDL_Draw library

[cocobear]

I am reading the source code of SDL_draw library,here is the prototype
of Draw_Pixel function:

void Draw_Pixel(SDL_Surface *super,
                Sint16 x, Sint16 y, 
                Uint32 color);

But I can't find the implement of this function.
I can only find a function pointer of Draw_Pixel :

extern DECLSPEC
void (*Draw_Pixel)(SDL_Surface *super,
                   Sint16 x, Sint16 y, Uint32 color);

this is just a definition of Draw_Pixel(variable) ,isn't it?

Anyone can help me?


Regards!

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